Sounds like you're doing everything you can presently, which is all you can be expected to do. Take every opportunity to fly that you can.

Bear in mind that the standard casual advice about seeking multi time and curtain-climbing into PIC multi turbine positions as fast as you can really won't help you a lot here. A background in floats, mountain flying, skis, and other such aviating is more germane to your goals.

You ought not worry about negative counsel. Some don't understand anyone who doesn't want to go to the airlines, but there's a lot of flying and a lot of work out there that's outside the airlines. The airlines are only a pat of the industry.

The best way to find work in Alaska is to go to Alaska.